No, you cant even unlock it without a relicanth
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When you're in the Sealed Chamber, Relicanth should be first and Wailord should be last.
Get relicanth and wailord. Put relicanth in the first slot and the wailord in the last. Then make a pokemon who has dig use dig.
In second room in Sealed Chamber, make your party pokemon, Wailord first, and last in Relicanth. Then, read the braille.
first bring a relicanth and a wailord. place relicanth at the big box at the left then place wailord at the bottom box of your Pokemon team. then press a to the top braille at the first chamber then a passage will appear. enter it then press "a" to the top braille... TADAA the braille puzzle have benn unlocked
You need Relicanth to be first in your party, and A wailord as the last, and then when you've read the braille you need to get one of your Pokemon to learn dig.